The Exergy Loss Mechanism And The Studing Of Decreasing Consumption Method Of The Yellow Phosphorus Electric Furnace

The shortage of energy is an important problem currently. How to use energy availably, namely to use it high-efficiently is necessary in carrying out the sustainable development strategy, and more and more people have been awared of importance of this problem today. The chemical engineering of phosphorus is one of the mainstays of the economy in Yunnan province. As a special industry, it consumes a lot of energy and makes bad pollution frequently, so some steps must be put into practice to decline them. In order to reduce the cost of the yellow phosphorus production, people have been studying the yellow phosphorus electric furnace from the energy balance and quantities equilibrium. Based on the energy balance and quantities equilibrium, this article mainly analyses the conversion and use of energy in the electric furnace, and the places and the principles of the consuming of the exergy were analyzed through the computer programme. The consuming of the exergy differs the consuming of the energy from several facts, and the method of exergy is more scientific, more reasonable, and more superiority. A prevalent viewpoint is that energy has two characteristics, the quantity and the quality. The principle of the energy balance only reflects on the quantity of energy, while exergy expresses the other, which is the effective part in energy can be turn into other kinds of energy unlimitedly. This article introduces the process of the effective part of energy in the yellow phosphorus electric furnace, appraises it with consuming of exergy and efficiency of exergy, and put , forward some steps in reducing consuming of exergy and improving efficiency of exergy.The thesis was accomplished on the foundation of summing up the experience of domestic and foreign experts in the production of the yellow phosphorus, and cooperated with a large enterprise in Yunnan province. By participating in the whole project, the main research results were achievedas follows:(1) The calculating model of the quality, the energy and the exergy in the system of the yellow phosphorus electric furnace was derived, and the balance calculating of it was accomplished basically. In addition, two important formulas were introduced. One is the formula that calculates the whole consuming exergy in producing per ton phosphorus, that is:The other is the calculating formula of the comsuming exergy of chemicalreation in proportion to the no inverse exergy, i.e: (2) The whole course of balance calculating about the quality,the energy and the exergy in the system of the yellow phosphorus electric furnace were realized through the program of VB6. 0. We analyzed the data collected within 72 hours of successional production of the factory in Yunnan province. At last we found the places where the exergy was consumed in the yellow phosphorus electric furnace and the reason why the phenomenon was happened. On the basis of this, we discussed the principles of consuming of the yellow phosphorus electric furnace.(3) The article also analyzed large numbers of data adopting MATLAB language, summed up some linear formula, and brought forward some steps in reducing consuming of exergy and improving efficiency of exergy.At last, the achievement and conclusion of the project we have finished are summarized, and some suggestions for the forward work of this system are presented.